Sole sticking press



Oct. 24, 1933. o. MICHALK SOLE STICKING PRESS Filed May 27, 1932 jNs/e/v r 1 Patented Get. 24, 1933 PATENT OFFICE 1,932,323 7 SOLE STICKING PRESS om Michalk, Dresden, Germany Application May 2'7,

and in Germany 3 Claims.

' In shoe sticking presses, more particularly those with a revolving press carrier, the clamping devices for holding the shoes or the press pad are closed by a hand-operated or foot-operated lever. 5 Thereupon the preliminary pressure medium is admitted to the pressure pad for pressing the soles against the shoes, as a rule by way of a valve situated in the axis of revolution. Thus, for closing the presses and for turning on the pressure, several manipulations are necessary, which in addition are dependent on the position of the circular support.

The object of the invention is to enable both operations to be carried out in immediate succession by means of the same lever, preferably by means of a single pedal. For this purpose the controlling member of the valve is so arranged that it can be caused to occupy successively the requisite positions through the intermediary of pressure points which can be tangibly differentiated from one another. The valve thus controls by overcoming these pressure points first the admission of the pressure medium to the clamping device and thereupon that to the press pad. Provision should preierably be made for rendering an intermediate release of the pressure in the press pad possible, if it should for instance be noticed that, on the press pad being applied, the soles have been placed askew.

A constructional example of the invention is illustrated in the accompanying drawing, in which Fig. 1 is a side view of a circularsticking press, showing the parts required for making the operation of the machine'clear,

Fig. 2 shows a corresponding partial front elevation,

Figs. 3, 4, 5 and 6 show the valve in four diiierent positions and Figs. 7 and 8 the manner in which the valve is locked and released by means or" a separate lever for suddenly relieving the press pad. J

On a frame a a ring I) is mounted in the usual way" so as to rotate thereon, the separate shoe I sticking presses being fixed to the said ring.

These presses comprise the abutment c with the press pad 0 and a clamping device d, the lever d of which ispivoted at d" and has its other arm lying within the range or" a controlling cam e.- On the frame a a cylinder 1 is mounted, the piston rod j of which supports the controlling cam e. The cylinder is adapted to be placed under pres sure through a pipe 1 connected to the valve g. From the valve g another pipe h leads tothe axis of rotation, not shown, of the ring b,through 1932, Serial No. 613,973,

June 19, 1931 which the preliminary pressure medium is conveyed by way of the pipe h to the press pad 0. The pipe 1' leads to the pressure medium reservoir and is connected to the valve casing g between the two pipes f and h. The member for controlling the valve is a piston It with a foot-operated knob The controlling piston is has along its length two neck-shaped constrictions m and. m and at the end longitudinal grooves m and a collar is acting as a stop. At n on the valve casing a locking arm n is pivoted, which, acted on by a spring, is adapted to bear against the collar 70'', while it extends into the range of a footoperated lever o pivoted at 0 on the valve casing so that the arm 0" of this lever can release the l locking arm n. i

The valve operates as follows: When the shoe which is to be stuck has been placed in its press, the foot-operated knob is is first depressed in opposition to the spring I, until"- the pressure of the second spring Z is felt by the foot. This causes the constriction m to connect the two pipes i and f, so that the piston in the cylinder f closes the clamping device d which remains locked automatically in the locking posi-so tion. By further depressing the foot-operated knob is the pressure of the spring I is also overcome and the constriction m connects the two pipes i and it, so that a preliminary pressure is applied to the press pad 0'. At the same time the '85 upper constriction m, as shown in Fig. 5, connects the pipef with the outlet go, so that the cylinder f is relieved of pressure and the cam member 6 can recede. It is then ready for controlling the clamping device of the next following press.

- Should it be noticed, on the press pad 0 commencing to apply pressure, that the sole is askew, the press pad may be immediately released by depressing the lever o with the foot. This releases the locking arm n and'the actuating piston is is free to move into a higher position (Fig. 6) under the action of its spring 2, its longitudinal grooves m connecting the pipe h-with the outer air. The pressure medium can thus escape.

What I claim is:

1. In a sole sticking press, in combination, a press pad, fluid-operated clamping means for holding a shoe against the press pad, a valve for controlling the supply of pressure medium sue- .v y cessively'to said clamping means and to the press pad by movement of the valve in a plurality of stages, means arranged to oppose the movement of the. valve for supplying the pressure 'medium, said opposing means being adapted to,

exert an opposing force which increases in stages,

and an operating member connected to the valve, whereby in the operation of the valve, the transition from one successive operating position of the valve, to another can be felt by the abrupt change of the opposition to the valve movement occurring at the transition point.

2. In a sole sticking press, in combination, a press pad, fluid-operated clamping -means for holding a shoe against the press pad, a valve for controlling the supply of pressure medium successively to said clamping means and to the press pad by movement of the valve in a plurality of stages, said valve comprising a valve piston, springs arranged to oppose movement of the valve piston for supplying the pressure medium, one of said springs being arranged to act on the valve piston alone during the initial movement of the valve and the other spring to act on the valve only during the subsequent movement thereof, and foot operated means connected to the valve piston for actuating the piston.

3. In a sole sticking press, the combination as set forth in claim 1, with a foot-operated lever operatively connected to the valve for moving the valve into a position for allowing the pressure medium to escape from the press pad, for the purpose set forth.

' OTTO MICHALK. 

